DIY Everest DD66000....finally

[Guido]

Dear forum Friends

It was a 2 year project but finally the cabinets are ready for pickup. They are still at my carpenters shop but will be picked up soon. Many thanks to my Carpenter for his outstanding work!
The components to be used are:
4x JBL 1500AL
2x JBL 476Be
2x JBL 045Be-1
Thanks to Giskard for his help to get these incredible stack of componets together!

I must confess that all crossover parts are still sitting on the shelf and I didn't manage to make the crossovers yet. I bet I'll be fast when the cabinets are here.

I will post some progress here but it will need some time as I'll do it right. :bouncy:

[Guido]

:)

[Hoerninger]

Glückwunsch für alle, die hier mitgearbeitet haben! :thmbsup:
___________
Peter

[Guido]

Glückwunsch für alle, die hier mitgearbeitet haben! :thmbsup:
___________
Peter

The hornmouth was "re-engineered" by Jan Daugaard years ago. He also did the basic form of the horn lips. Modifications to achieve the original JBL conical/exponential form where done by myself.

Thank you Jan!

[caladois]

:applaud:

[Earl K]

Nice ! :thmbsup:
http://www.audioheritage.org/vbulletin/attachment.php?attachmentid=54646&stc=1&d=1327844975

> Since you "re-engineered" the adapter that lives between the driver & the horn bell , is the angle ( seen above ) a match to the originals' entry angle into the "lips" ( to achieve "D.D." ) & is the part a simple extension of the overall exponential flair rate , as seen in the horn walls ?:)

[Audiobeer]

Absolutley stunning. Just beautiful workmanship and design, :applaud:

[richluvsound]

:blink:**Guido,*


** * * I'm speechless . Finally, your patience and hard *is work rewarded . I'm sure the boss will want them upstairs centre stage .:D**I'll start saving up for the appropriate *cigars and beverage .

** Congratulations my friend ... Look forward to hearing them hopefully !


Rich

apologies for the ****** * my keyboard is shot !

[Guido]

Hi Earl,

I don't have the original Ev2 here. AFAIK the adapter is a bit shorter than original. It doesn't matter where the adapter ends and the horn begins or vice versa.
The mouth section and angles are very similar to the H9800. The EV2 horn is a widened H9800 or H4338 (the designer might correct me :o:).
I doubt that this horn is an exact EV2 horn clone but it measures close enough for me if I compare it with JBLs own 476Be/H66000 curves.

PS: The JBL BiRadial flares near the adapter are conical and later exponential.


Nice ! :thmbsup:
> Since you "re-engineered" the adapter that lives between the driver & the horn bell , is the angle ( seen above ) a match to the originals' entry angle into the "lips" ( to achieve "D.D." ) & is the part a simple extension of the overall exponential flair rate , as seen in the horn walls ?:)

[Amnes]

There is not too much one can say about a nearly completed diy project of this magnitude since bystanders like myself can't even imagine the research and man hours devoted to it even when accurately told thus I will not even attempt to stress my brain to much. Instead I shall silently appreciate the provided pics and description and use only two words to sum up my feelings for them: amazing + congratulations Guido!

[Krunchy]

Wow!
Those look beautiful Guido, you must be very excited :bouncy:
Have fun! :)

[grumpy]

I can appreciate the amount of planning and work that went into those...
They look very nice and I'm sure will sound impressive!

[4313B]

Very nice Guido! :yes:


The mouth section and angles are very similar to the H9800.

I doubt that this horn is an exact EV2 horn clone but it measures close enough for me if I compare it with JBLs own 476Be/H66000 curves.It probably doesn't matter, they're all quite good. You'll just adjust your passive compensation based on your particular horns/drivers. The H9800/H4338 "measure" better than the E2 horn but either one would have looked pretty awful bolted into that wonderful enclosure. :rotfl:

Like Greg has said, most of the "horn" is for looks, the important part is the first part and if you made yours based on the H9800 then you're good to go.

You must have one hell of a carpenter. JBL played hell getting their enclosures to work. They look really nice. :)

[spkrman57]

Guido,

That is great work, you can be very proud of your new spkrs!

Regards, Ron

[Rolf]

Seeing is believing. I would not say no to get a pair. Do you have any idea of the cost of the project?

Congratulations!

[Guido]

Thank you for all the positive feedback :)
As promised more pics and details will follow with time. It will take me another 1-2 month.

and

You must have one hell of a carpenter.

Definitely and absolutely :yes:

[Mr. Widget]

I wonder if there are any other audio forums where there are so many absolute nut jobs!

Congratulations Guido! They look very nice indeed.



Widget

[yggdrasil]

Fantastic. Looking really good. Enjoy the tour.

Johnny

[Chas]

OMG! Freakin' fantastic Guido. I can't wait to hear your report once you have the networks completed and you get them fired up.:p

[4313B]

I wonder if there are any other audio forums where there are so many absolute nut jobs!
From what I've seen all the others are completely overrun...

[Titanium Dome]

Guido,

Yes, it must be exhilarating to see such a big part of the project nearing completion. It takes time to do things right!

I admire patience and persistence as well as a beautiful product. Good luck finishing this. It will be fantastic!

[Wardsweb]

Kudos to you sir. Outstanding!

Good things come to those who wait. My main speakers were also years in the making.

[Charles0322]

Absolutely Gorgeous!!!

To call that man a carpenter is a great understatement. That man or woman is by far a very skilled cabinet maker.

Congrats.




Dear forum Friends

It was a 2 year project but finally the cabinets are ready for pickup. They are still at my carpenters shop but will be picked up soon. Many thanks to my Carpenter for his outstanding work!
The components to be used are:
4x JBL 1500AL
2x JBL 476Be
2x JBL 045Be-1
Thanks to Giskard for his help to get these incredible stack of componets together!

I must confess that all crossover parts are still sitting on the shelf and I didn't manage to make the crossovers yet. I bet I'll be fast when the cabinets are here.

I will post some progress here but it will need some time as I'll do it right. :bouncy:

[Robh3606]

They look really nice! Enjoy them

Rob:applaud:

[JBLAddict]

could be the single most impressive thing I've ever seen on this forum, just wow, amazing.:applaud:

[pos]

VERY IMPRESSIVE GUIDO! :coolness:

How did you modify the 800Hz filter to accommodate the 8 ohms woofers?

[Guido]

More infos here. Nothing final, see post #1

http://www.audioheritage.org/vbulletin/showthread.php?29853




VERY IMPRESSIVE GUIDO! :coolness:

How did you modify the 800Hz filter to accommodate the 8 ohms woofers?

[wrager]

There is not too much one can say about a nearly completed diy project of this magnitude since bystanders like myself can't even imagine the research and man hours devoted to it even when accurately told thus I will not even attempt to stress my brain to much. Instead I shall silently appreciate the provided pics and description and use only two words to sum up my feelings for them: amazing + congratulations Guido!

Wow! Very well said!

[Woody Banks]

There is not too much one can say about a nearly completed diy project of this magnitude since bystanders like myself can't even imagine the research and man hours devoted to it even when accurately told thus I will not even attempt to stress my brain to much. Instead I shall silently appreciate the provided pics and description and use only two words to sum up my feelings for them: amazing + congratulations Guido!

Same here. It's the WOW FACTOR!:applaud:

[JoeNelis]

They are simply amazing Guido, would love a pair for my collection, sadly no room:(
It's very hard to wait when your so close to a completed project... congratulations !!!!

[Toms Studio]

Wow, wow, wow. They look super nice.

[Guido]

Like Greg has said, most of the "horn" is for looks, the important part is the first part and if you made yours based on the H9800 then you're good to go.

We currently change the horn adaptors. I was not 100% satisfied with the first hit
1. pic first hit (a test)
2. pic currently made adaptors (H9800ish)
They look similar but perform totally different. See quoted 4313B Post ;)

[Mr. Widget]

They look similar but perform totally different.That was the point several of us were trying to make when discussing some of the H9800 horn clones made by a few different forum members... a seemingly small change, especially in the throat area, can make quite a difference and the correct geometry of the H9800 is far from simple to create. ;)

What about the tweeter horn you are using? Isn't it optimized for the K2-S9800s higher tweeter position?


Widget

[Guido]

What about the tweeter horn you are using? Isn't it optimized for the K2-S9800s higher tweeter position?
Widget

It is, but I don't see too many problems. You may also have noticed that the upper horn lip is also not tilted as the original. To be honest, I don't expect to hear much of the supertweeter as it kicks in only at 19kHz. We will see.... and hear!

[Robh3606]

That new throat doesn't look right. Take a look at this older thread,

http://www.audioheritage.org/vbulletin/showthread.php?9901-Quick-amp-Dirty-4430-Inspired-Contents/page2&highlight=QUICK+4430

Rob:)

[Mr. Widget]

I was thinking that too... but it could be due to the rendering. A wireframe might be more instructive. I've posted this before along with the .igs data to create it and I assume that is what Guido is using as a starting point, but here is a view that shows that the transitional fillet looks different than Guido's rendering.


Widget

[Guido]

It will be right in the end :)

You need to see it. It can't be showed in pics or rendered CAD drawings. It's a question of the viewing angle.

Below is original EV2, not mine

[Guido]

That new throat doesn't look right. Take a look at this older thread,

http://www.audioheritage.org/vbulletin/showthread.php?9901-Quick-amp-Dirty-4430-Inspired-Contents/page2&highlight=QUICK+4430

Rob:)

No, not wrong.

[Robh3606]

Hello Guido

That red line doesn't follow the contour, the white line does. That's an Array horn not a 9800. You need a close up of the transition between the throat and the horn. The white lines are the transition in the Array Horn between the outer horn and it shows the 2 piece construction on the throat.

Rob:)

[Guido]

Hello Guido That red line doesn't follow the contour, the white line does. That's an Array horn not a 9800. You need a close up of the transition between the throat and the horn. The white lines are the transition in the Array Horn between the outer horn and it shows the 2 piece construction on the throat. Rob:) I know that Rob it was for clarification only as there is no real line in the contour. See the EV2 closeup I posted. Here the line is also not as my red line but looks like my red line (red wine:confused:) . Anyway, thank you for participating and trying to help! I'm proud to get you folks back to the forum at least for a few days :D

[Jan Daugaard]

The adapter is intended to be a parabolic horn, and I know for a fact that the black block is the one half of a parabolic horn, because I did the mathematical modelling and made the CAD drawing that was used to mill it.

Measurements will show which is the better adapter.

Squaring the circle (http://en.wikipedia.org/wiki/Quadrature_of_the_circle)
while retaining a parabolic expansion is anything but trivial,
and I'm intrigued to know whether my efforts have paid off.
We will know when Guido has made measurements with the green adapter (measurements made with my adapter are already available in various threads).

[Guido]

The adapter is evidently a parabolic horn, and I know for a fact that the black block is the one half of a parabolic horn, because I did the mathematical modelling and made the CAD drawing that was used to mill it.
Measurements will answer the question as to which adapter has the right shape.


Jan, thank you for participating.
Nothing wrong with your adapter. I even have a perfect filter for it. I just want to compare it with the original Everest 2 filter and the matching adapter.
If I have made the comparison we will know if your efforts have paid off.

[Robh3606]

I hope you guys nail it. If it works with the Everest Crossover it's a done deal.

Rob:)

[Guido]

This is about the best in room response I ever measured!
Normal room
No treatment
Very insensitive to room modes
Flat within +/- 3dB down to 10Hz :eek:
101dB SPL :shocking:

Reworked EV2 LF1 and LF2 crossover for usage of 1500AL's as worked out here
http://www.audioheritage.org/vbulletin/showthread.php?29853-h66000-h9900-h4365

I'll post full schematics when finetuned.

[Hoerninger]

Thanks!
I remember all of those doubts about the bass capabilities of the Everest ;)
____________
Peter

[cooky1257]

Assuming all due care is taken at the throat/adapter section how much leeway is there on the rest of the flare/contour?
What prompts the question is the dirty great indent/decal on one side of the SAM1 and the fact I'm current shaping the flare of a H9800 plus I'm no Woody;)

Cooky

[Guido]

throat/adapter is ready!
Midrange curves are coming. I'm currently working on it.

[Mr. Widget]

Reading your thread, I feel like I've already read the novel and know how it ends... :D
I won't give it away, but you'll be pretty damned happy. ;)



Widget

[4313B]

Thanks!I remember all of those doubts about the bass capabilities of the Everest ;)____________PeterYeah, that was funny right out of the box, all the derps on the Internet whining about how bad the low frequency response was on paper. :rotfl:
Reading your thread, I feel like I've already read the novel and know how it ends... :D I won't give it away, but you'll be pretty damned happy. ;):applaud:

[Guido]

Assuming all due care is taken at the throat/adapter section how much leeway is there on the rest of the flare/contour?

The H66000 is roughly a widened H9800
The horn sides are a bit curvier due to the form of the Everest cabinets. Look was first here.

[Guido]

Yeah, that was funny right out of the box, all the derps on the Internet whining about how bad the low frequency response was on paper.

While using the 1500AL's reduce the system impedance to 3.8 ohms (not too bad) it also increase the sensitivity to around 100dB !! And then this LF response, can't wait to play them :bouncy:

[Guido]

Reading your thread, I feel like I've already read the novel and know how it ends... :D
Widget

I think I too know how it ends. But still it's exiting as hell.

[pos]

I am looking for the power response measurements of the DD66000 (the on-axis/off-axis/power/directivity curves by Floyd Toole) but cannot find them (the DD66000 topic in the technical section is empty).
Any pointer?

[ivica]

I am looking for the power response measurements of the DD66000 (the on-axis/off-axis/power/directivity curves by Floyd Toole) but cannot find them (the DD66000 topic in the technical section is empty). Any pointer? May be helpful: http://audioheritage.org/vbulletin/attachment.php?attachmentid=18595&d=1158158693

Regards Ivica

[pos]

Thank you Ivica, but I am looking for this kind of curves:
http://www.audioheritage.org/vbulletin/showthread.php?10639-K2-S9800&p=121940&viewfull=1#post121940

[badman]

This is about the best in room response I ever measured!
Normal room
No treatment
Very insensitive to room modes
Flat within +/- 3dB down to 10Hz :eek:
101dB SPL :shocking:

Reworked EV2 LF1 and LF2 crossover for usage of 1500AL's as worked out here
http://www.audioheritage.org/vbulletin/showthread.php?29853-h66000-h9900-h4365

I'll post full schematics when finetuned.

Wowzers- who'd have thunk that the side-by-sides would make THAT much difference in how they excite modal behavior!

[spkrman57]

We need more worthy projects like this one!!! :bouncy:

Regards, Ron

[4313B]

This project is pretty costly and the parts are next to impossible to source. There are a couple other forum members working on similar systems but I don't think they are far enough along to post anything yet.


While using the 1500AL's reduce the system impedance to 3.8 ohms (not too bad) it also increase the sensitivity to around 100dB !! And then this LF response, can't wait to play them :bouncy:I'm getting 98 dB SPL, 2.83V, 1m and that is with the passive filter inline.

[SEAWOLF97]

The cabs are beautiful :D

what wood is the veneer ?

[Guido]

I'm getting 98 dB SPL, 2.83V, 1m and that is with the passive filter inline.

I can check this again. The difference can be because of different measurement systems. I learned before that mine is a bit on the high side with SPL figures. Who cares, sensitivity is high anyway.


The cabs are beautiful :D what wood is the veneer ?
Thank you!
It's a kind of rosewood which is called palisander here. My cabinet maker says that the red colour of the original Everest is a bit "tuned" by the finish. He says mine will also get a bit more red with time.

[Guido]

We need more worthy projects like this one!!! :bouncy:Regards, Ron

I think you are right.
The projects don't need to be that costly but we definitely need some more nice projects.
The Everest 55000 project is also amazing as are many others (no chance to be complete here).
Please MORE!!

[richluvsound]

Urr humm !

Yeah, yeah, its coming . Need to get a 4343a refurbishment done first . Make horns and then WAIT !..... for someone to finish his silly speakers :D

Seriously, I don't think there is a single forum member thats not excited for you Sir !

Rich

[sonofagun]

Guido: Very interesting and exciting visually.

What are your plans (if any) for a grille (on the woofers)? A sculptured foam grille which I can supply could add substantially to the visual aesthetics.

[4313B]

I can check this again. The difference can be because of different measurement systems. I learned before that mine is a bit on the high side with SPL figures. Who cares, sensitivity is high anyway.I care! :p I like sensitivity. :) I was merely making the observation that I ended up with 2 dB greater efficiency over the Everest II due to the lower impedance coils of the 1500AL's.

[sonofagun]

My point is a sculptured foam grille adds a three dimensional look which compliments the overall product aesthetics - prime example being what a sculptured foam grille did for the appeal of the L100 model.. Also helps minimize diffraction while being acoustically neutral.

[richluvsound]

My point is a sculptured foam grille adds a three dimensional look which compliments the overall product aesthetics - prime example being what a sculptured foam grille did for the appeal of the L100 model.. Also helps minimize diffraction while being acoustically neutral.




OK :)

[4313B]

I think you are right.
The projects don't need to be that costly but we definitely need some more nice projects.
The Everest 55000 project is also amazing as are many others (no chance to be complete here).
Please MORE!!I'm thinking about selling my 1400 Array horns (with 435BE and 045BE in place of 435AL and 045TI). They should be good for some kind of a project. I had planned on putting them with some LE14H-4's or 1501FE's but that doesn't seem to be working out right now.

[Guido]

Guido: Very interesting and exciting visually.

What are your plans (if any) for a grille (on the woofers)? A sculptured foam grille which I can supply could add substantially to the visual aesthetics.

I'll need to think about that and will contact you.

[Guido]

One EV2 is up and running.

I still need to modify the LF/MF crossover region a bit to get the EV2 voicing for higher sensitivity (use of 2x1500AL). That is why the MF crossover is still outside the cabinet and on an evaluation board.
Also the 045Be-1 UHF is app. 4db "behind" the rest of the system because it simply don't have enough SPL. It CAN be heard though.
Will post some PRELIMINARY pics and curves these days.

Oh BTW... sounds nice, even in mono :coolness:

[ivica]

One EV2 is up and running.

I still need to modify the LF/MF crossover region a bit to get the EV2 voicing for higher sensitivity (use of 2x1500AL). That is why the MF crossover is still outside the cabinet and on an evaluation board.
Also the 045Be-1 UHF is app. 4db "behind" the rest of the system because it simply don't have enough SPL. It CAN be heard though.
Will post some PRELIMINARY pics and curves these days.

Oh BTW... sounds nice, even in mono :coolness:
Your work is fantastic. My personal admiration.
I only wonder what would be the horizontal dispersion characteristic of such large horn, especially after so many 'flattening' MF crossover, and 'pushing' MF driver to operate up to almost 20kHz.
I wonder here if something improvements in the horizontal plane can be get with some kind of "fins" (such as 2397), because I expect that such large horn would be "beamy", especially at the frequency over 7kHz. Anyhow your measurements would give us the answers.

My Regards
Ivica

[4313B]

It is beamy due to the large aperture, hence the small aperture 045 to maintain off-axis power response. In the Everest II design, the 045 arguably comes in a bit too high. Perhaps the S9900 implementation is better.

[ivica]

It is beamy due to the large aperture, hence the small aperture 045 to maintain off-axis power response. In the Everest II design, the 045 arguably comes in a bit too high. Perhaps the S9900 implementation is better.

Just looking at the photos of the DD66000, I have expected that large MF driver horn aperture would produce "beamy" off-axis response, especially, for higher frequency, but I have no idea how "bad" that would be. Here small aperture UHF driver (045) 'has small part" of spectrum to reproduce, due to very high ( 4th-order) high-pass cut-off frequency- I expect over 16kHz, so its contribution in frequency dispersion is very "weak".
On the other side if UHF 045 would "get an opportunity" to reproduce wider part of audio spectrum, because of its geometrical position in relate to MF driver, I would expect "comb" effect in the response ( what is visible on the 434x old studio monitors), or even on K2-S9900

http://www.jblsynthesis.com/downloads/products/prod_93_634484024057666660_K2S9900OMhr.pdf


It is nice opportunity that Guido would be willing to do some F_R measurements, not only "in-axis", but I believe something "out-of-axis", so that information would be available. "Interesting" that such information is not generally available.

[Mr. Widget]

Here is a plot taken of one of my Everest IIs... taken from the listening position all room effects, floor bounce etc. are present in the plot. The blue curve is with the tweeter disconnected and the red shows the comb filtering. The effects are at such high frequencies and fairly subtle... I certainly don't the difference.

As to the beaming of higher frequencies? I suppose, but it is still better controlled and images better than say a 2397 or any of the radial horns I've heard with or without fins/vanes.


Widget

[Robh3606]

On the other side if UHF 045 would "get an opportunity" to reproduce wider part of audio spectrum, because of its geometrical position in relate to MF driver, I would expect "comb" effect in the response ( what is visible on the 434x old studio monitors), or even on K2-S9900


If you want to hear what the 045 can do the Array is the best option. Lower crossover point. Comb filtering clearly visible in the measurements.

Rob:)

[Guido]

Here is a plot taken of one of my Everest IIs... Widget

Looks similar. I have the same dip at crossover region (750Hz). As soon as I manange to get jpeg's out of my system I'll post my preliminary curve. It worked before but now.... well computer science.

I attached a curve from German Audio Magazine.

[timc]

TBH: That looks really bad off-axis

[Guido]

Here we go.
Note that all this is preliminary with no listening tests and the first measurement. It WILL be modified.

And yes there is a 40Hz room mode.

first 20Hz to 20 kHz
second 40Hz to 40kHz

[Guido]

TBH: That looks really bad off-axis

No it doesn't as nobody sits 60° off axis

[Guido]

Also the 045Be-1 UHF is app. 4db "behind" the rest of the system because it simply don't have enough SPL.

After looking at the 045Be-1 specs I believe it is able to produce 95-96dB. I probably need to rework the crossover.

[ivica]

Here is a plot taken of one of my Everest IIs... taken from the listening position all room effects, floor bounce etc. are present in the plot. The blue curve is with the tweeter disconnected and the red shows the comb filtering. The effects are at such high frequencies and fairly subtle... I certainly don't the difference.

As to the beaming of higher frequencies? I suppose, but it is still better controlled and images better than say a 2397 or any of the radial horns I've heard with or without fins/vanes.


Widget

Very valuable work indeed. Real data under "real operating conditions". Thank You.

Looking at the response curve, may be one experiment can give interesting results: to connect MF driver in different polarity. Such may be 'flatten' response in crossover regions (around 800Hz, and may be at very high say over 16kHz).
One thing more, if possible, to measure the response, say about at 30 deg off-axis. I expect much more 'irregularities' over 5kHz, but may I am wrong.

Looking to your 'independent' measurements, and your experience :

"...and the red shows the comb filtering. The effects are at such high frequencies and fairly subtle... I certainly don't the difference....."

and concerning the MF-driver-476 capabilities I think that UHF 045 driver is present in original DD66000 design just a "marketing MUST".

On the other side Guido's nice work, may be encourage some of us, to try DIY project with much more "affordable" drivers
( lets say 2234+2234 + 2446/5 + 2402-05, or even 2245 + 2446 + 2402-05) off-course with lot of work in the crossover networks.

Regards
Ivica

[Guido]

Looking at the response curve, may be one experiment can give interesting results: to connect MF driver in different polarity. Such may be 'flatten' response in crossover regions (around 800Hz, and may be at very high say over 16kHz).
One thing more, if possible, to measure the response, say about at 30 deg off-axis. I expect much more 'irregularities' over 5kHz, but may I am wrong.

MF Driver with different polarity gives a big dip at crossover region. JBL did this right :p. I'll post curves of that later.
30° response is fine. I'll post curves of that later.

[ivica]

After looking at the 045Be-1 specs I believe it is able to produce 95-96dB. I probably need to rework the crossover.

I do believe that You have other source of information other then this

[ivica]

Looks similar. I have the same dip at crossover region (750Hz). As soon as I manange to get jpeg's out of my system I'll post my preliminary curve. It worked before but now.... well computer science.

I attached a curve from German Audio Magazine.

Neglecting the problem around 750Hz 0n say up to 30 deg off-axis, the rest of the horizontal dispersion response seems to me unrealistic from mentioned magazine measurements

[Guido]

On the other side Guido's nice work, may be encourage some of us, to try DIY project with much more "affordable" drivers
( lets say 2234+2234 + 2446/5 + 2402-05, or even 2245 + 2446 + 2402-05) off-course with lot of work in the crossover networks.

Regards
Ivica

ONLY with Truextent Diaphragms. An Everest inspired Project without Beryllium is nonsense in my eyes. Advantage is that you can save the UHF driver which gives you the money for Beryllium.

[ivica]

ONLY with Truextent Diaphragms. An Everest inspired Project without Beryllium is nonsense in my eyes. Advantage is that you can save the UHF driver which gives you the money for Beryllium.
On my option, the advantage of the DD66000 : there is really only one crossover point about 750 Hz...,and, fortunately almost the whole audio bandwidth is "covered", owing to MF driver fantastic capabilities, and large horn good matching and wide dispersion.

Concerning the K2-S9900 information about total "emitted" sound power given in:
http://www.audioheritage.org/vbulletin/showthread.php?24086-K2-s9900&p=252245&viewfull=1#post252245
http://www.audioheritage.org/vbulletin/attachment.php?attachmentid=39393&stc=1&d=1242930780

that new H66000 horn is kind of "miracle"

[Guido]

Here are some pics of the assembling process.
Sub, LF and UHF boards are ready. MF boards are still outside the cabinet on evaluation boards. That's why FR curves need to wait a bit.

Pic 1-5 crossover boards outside and inside cabinet

[Guido]

Pic 1: UHF board

Pic 2: MF and UHF driver inside cabinet

Pic 3: evaluation board (controlled chaos ;))

[Guido]

Lying on it's back
Woofer and spikes installation

[Guido]

Listening has started :bouncy:

[Amnes]

"I'm too sexy for my cat" - said the Everest.

Retarded quality craftsmanship. Are those black mundorf caps bipolar elkos?

[Guido]

Are those black mundorf caps bipolar elkos?

Yes!

Only present in Sub and LF network. As in original Everest.

Except Sub network all CC'ed. As in original Everest.

The blue jumpers are there to adjust Sub and LF level.... As in original Everest.

[Amnes]

Nice, I've never seen mundorf bipolars, might use them some day since now I know of their existence. This forum brings perfection out of people. Whenever I see neat crossovers I hope and crave to attempt equal visual niceness.

I hate and love to lurk in your thread - loads of inspiration.

[Guido]

Here are the curves for on axis and 30° off axis FR.
Green 0°
Orange 30°

I also added Impedance curves

[richluvsound]

:applaud: ...... Can you take some measurements from the guest room please ?

[Guido]

:D

[hwirt]

:D

OMG! Guido that is fantastic, thanks for the pictures.

[Guido]

For those irritated by the high resolution of the curves here is a "brochure like" curve.
10dB scaling
1/12 smoothing

Sound is wonderful. Still no cc battery in place, so it will be smoooother.

[rdgrimes]

:D

That wall is begging for an 80" plasma screen.

[Guido]

That wall is begging for an 80" plasma screen.

I very rarely use a TV.
For show only

[4313B]

Absolutely wonderful Guido! :)

[Mr. Widget]

Congratulations Guido, they look quite nice in your room. Two comments:

Are they toed in enough? (OK that was a question.) :D

And second, As I look at my pair I think it odd that Ashcraft didn't make the UHF tweeter module the same width as the inner die-cast black section of the mid horn. On the factory DD66000s the tweeter modules is slightly narrower. On yours I see that you made it slightly wider... seems to me the lines would be cleaner if the black tweeter and horn sections looked like a single projected arc.

I am not suggesting you change yours... just noticing.

Tiny details like that aside, your set up and speakers looks very nice... I hope you enjoy the system for many years to come!


Widget

[richluvsound]

Beautiful job Guido,

I'm really looking forward to hearing them. I get to hear these and the originals in the same weekend :) What about the WAF factor ?

Rich.

[JuniorJBL]

Just wonderful G!!
Very pretty!:applaud:

[yggdrasil]

Fantastic job.

Now it's time to ENJOY!

[Jan Daugaard]

In answer to Widget's questions / comments:

>>Are they toed in enough?
The horn has the most regular frequency response when the listener and the 2 loudspeakers form an equilateral triangle, i.e. when the listener is sitting 30° off axis.

>>I [i.e. Widget] think it odd that Ashcraft didn't make the UHF tweeter module
>>the same width as the inner die-cast black section of the mid horn.
The upper horizontal line in the drawing below marks the transition from the inner die-cast black section to the lips. That horizontal line is also a tangent to the UHF module.

[Guido]

Are they toed in enough? (OK that was a question.) :D
Widget

I think I prefer the slightly off axis sound. Measurements show that it doesn't matter soundwise.
I need to experiment with the soundstage though.



And second, As I look at my pair I think it odd that Ashcraft didn't make the UHF tweeter module the same width as the inner die-cast black section of the mid horn. On the factory DD66000s the tweeter modules is slightly narrower. On yours I see that you made it slightly wider... seems to me the lines would be cleaner if the black tweeter and horn sections looked like a single projected arc.
Widget

You are right. In fact it's a construction error :(
Do I care? Not really.

Before I MAYBE change this I need to finish my DIY DAC and my new passlabs clones. It will take tiiimmmeeee.

[Mr. Widget]

>>I [i.e. Widget] think it odd that Ashcraft didn't make the UHF tweeter module
>>the same width as the inner die-cast black section of the mid horn.
The upper horizontal line in the drawing below marks the transition from the inner die-cast black section to the lips. That horizontal line is also a tangent to the UHF module.As a designer, once I saw the first prototype, I would have changed the radius of the tweeter module so that the two black elements, the cast mid horn section and the tweeter module appeared to be both the same width... my comment is purely a subjective aesthetic one, but looking at the design of the factory DD66000, it looks like a goof to me. But then I have been spending far too much time staring at them as I spend hour after hour enjoying what they do. ;)

As to the toe in, I have mine set to an equilateral triangle using the throat of the mid driver as two of the vertices with the centerline approximately aimed at the listener... so something closer to 60°.


Widget

[maxwedge]

Very nice Guido! :applaud:

[Guido]

Thank you for all the compliments.

This wouldn't have been possible without the help of some forum members. Also my "hell of a carpenter" did a perfect job.

The rework of the crossover for the 1500AL use isn't trivial also. It's still not finalized, but close to.

For the ambitious DIYers here:
The design CAN be "cloned" moreorless. Thinking of a truextent 2450SL or Radian 951PB driver with 2pc ME150 per side. Forget the supertweeter. EV 2 Horns clones in a nice cabinet. Why not?

[ivica]

For those irritated by the high resolution of the curves here is a "brochure like" curve.
10dB scaling
1/12 smoothing

Sound is wonderful. Still no cc battery in place, so it will be smoooother.

Your Work (with large "W") is absolutely amazing, concerning mechanical and acoustical results. From your measurements MF horn behaves like CD with almost the same behavior i to +/-30 deg region (horizontal) up to 18kHz. May be some of the member can explain the reasons. May be that small (about 90 deg wide) conical horn near the driver mouth, and small 'negative' expansion in vertical plane is the main reason for total horn behavior.
http://www.audioheritage.org/vbulletin/showthread.php?32446-DIY-Everest-DD66000-finally&p=327827&viewfull=1#post327827
http://www.audioheritage.org/vbulletin/showthread.php?32446-DIY-Everest-DD66000-finally&p=327831&viewfull=1#post327831

If some more dimensions data would be available about the mentioned "adapter" would be well-come.
Some more then:
http://www.audioheritage.org/vbulletin/showthread.php?32446-DIY-Everest-DD66000-finally&p=327863&viewfull=1#post327863
"....PS: The JBL BiRadial flares near the adapter are conical and later exponential........."

Do You think that:

http://www.audioheritage.org/vbulletin/showthread.php?5114-2328-2397-transition&p=48092&viewfull=1#post48092

is enough, or You have some more suggestions.

Regards
Ivica

[Guido]

Ivica, you can try to contact member Jan Daugaard. He designed the first version of the EV2 clone horn. He can comment on these version. He is very good in horn design.
I tested another version which is a widened H9800 which I mentioned earlier. My attempt wasn't scientific but trial and error. The H9800 CAD files are here at the forum. Scale and modifiy it to fit the Everest dimensions and you are done. I can't proof but I'm pretty sure it's close enough to the original horn. It even measured identical to Widgets curve with the original EV2 crossover circuit in place.

Greg would be able to tell us but I doubt he will ;)

Jan's version was very nice too but not so easy to EQ with the crossover. So I decided to finally go with the H9800'ish horn. Adapter and lips are different than the first attempt.

[Guido]

May be some of the member can explain the reasons. May be that small (about 90 deg wide) conical horn near the driver mouth, and small 'negative' expansion in vertical plane is the main reason for total horn behavior.
http://www.audioheritage.org/vbulletin/showthread.php?32446-DIY-Everest-DD66000-finally&p=327827&viewfull=1#post327827
http://www.audioheritage.org/vbulletin/showthread.php?32446-DIY-Everest-DD66000-finally&p=327831&viewfull=1#post327831

Regards
Ivica


This is the final adapter

It was confirmed in an earlier post that this "little thing" creates the sound.
The visual lines aren't really there. It's for clarification. The adapter is rounded there.

[4313B]

It was confirmed in an earlier post that this "little thing" creates the sound.
Yes, as per Greg.

Both the H4338 and 1400 Array/SAM1HF horns have front and back sections unlike the H9800. Additionally, the 1400 Array/SAM1HF back horn comes in two halves (so the 1400 Array/SAM1HF horn actually comprises three separate sections). Perhaps I will take one apart in the next day or two and take a picture for the curious.

In hindsight, two things could have happened. Guido could have either modeled the back horn of the H4338 I sent him or I could have sent him a 1400 Array back horn to model. Either back horn can be mated to whatever front horn is desired. At one point I wanted to make a 15.25" wide front horn (same width as a 1500AL) to mate with the H4338 back horn instead of the stock 20.375" wide H4338 front horn, but Greg was so adamant about me using a vertical horn instead that I canned the idea.

The H9800 model was derived from a prototype assembly that came in two halves. As everyone knows, the production H9800 horn was actual a one piece affair.

Of all the horns the H4338 "measures" the "best". The real key to all of them though is using the correct notch filters per specific application. For example, as per Greg, the H4338 horn "likes" a little scoop out in the 4k to 6k range, if response is flat it just doesn't sound quiet as nice.

[4313B]

Thank you for all the compliments.

This wouldn't have been possible without the help of some forum members. Also my "hell of a carpenter" did a perfect job.I think the result is absolutely fantastic.
The rework of the crossover for the 1500AL use isn't trivial also. It's still not finalized, but close to.
It definitely isn't trivial. Consider that Greg eventually went all active with his pair to get the best out of the bottom end. And now he is actually considering replacing one of the 1501AL's on each side with a brand new 15xx design that Jerry is working on with even lower Fs.

[ivica]

Ivica, you can try to contact member Jan Daugaard. He designed the first version of the EV2 clone horn. He can comment on these version. He is very good in horn design.
I tested another version which is a widened H9800 which I mentioned earlier. My attempt wasn't scientific but trial and error. The H9800 CAD files are here at the forum. Scale and modifiy it to fit the Everest dimensions and you are done. I can't proof but I'm pretty sure it's close enough to the original horn. It even measured identical to Widgets curve with the original EV2 crossover circuit in place.

Greg would be able to tell us but I doubt he will ;)

Jan's version was very nice too but not so easy to EQ with the crossover. So I decided to finally go with the H9800'ish horn. Adapter and lips are different than the first attempt.

It would be helpful if You know where "H9800 CAD" can be find.
Regards
Ivica

[pos]

For example, as per Greg, the H4338 horn "likes" a little scoop out in the 4k to 6k range, if response is flat it just doesn't sound quiet as nice.
I think it has to do with the off axis behavior of these horns, with a very wide horizontal directivity in this range.

Here are the measurement of my H9800 clones with 2435 (after on axis eq) :

horizontals:
55401


This phenomenon can also be guessed from Toole's averaged curves:
http://www.audioheritage.org/vbulletin/showthread.php?10639-K2-S9800&p=121940&viewfull=1#post121940

The verticals (also included in Toole's averagings) are better behaved:
55402

[Guido]

It would be helpful if You know where "H9800 CAD" can be find.
Regards
Ivica

You guys are really lazy

http://www.audioheritage.org/vbulletin/showthread.php?23297-H9800-CAD-Data&p=232914

[Mr. Widget]

Guido...

Ivica didn't have Project May access... I just gave him the added permissions.


Widget

[timc]

Guido...

Ivica didn't have Project May access... I just gave him the added permissions.


Widget

Could i also get it?

-Tim

[Mr. Widget]

Sure...


Widget

[Guido]

Guido...

Ivica didn't have Project May access... I just gave him the added permissions.


Widget

OK, you guys are sometimes lazy, this time not ;)

[ivica]

Guido...

Ivica didn't have Project May access... I just gave him the added permissions.


Widget

Many thanks Mr.Widget.



Guido
http://www.audioheritage.org/vbulletin/images/misc/quote_icon.png Originally Posted by ivica http://www.audioheritage.org/vbulletin/images/buttons/viewpost-right.png (http://www.audioheritage.org/vbulletin/showthread.php?p=331700#post331700)
It would be helpful if You know where "H9800 CAD" can be find.
Regards
Ivica



You guys are really lazy

http://www.audioheritage.org/vbullet...-Data&p=232914 (http://www.audioheritage.org/vbulletin/showthread.php?23297-H9800-CAD-Data&p=232914)

Sorry Guido, anyhow thanks for the upper link, but still remains: "some more mechanical dimensions, You have finally apply" for 2-inch driver.
I do not think that 'scaling' is the only thing.

Regards
Ivica

[ivica]

Ivica, you can try to contact member Jan Daugaard. He designed the first version of the EV2 clone horn. He can comment on these version. He is very good in horn design. I tested another version which is a widened H9800 which I mentioned earlier. My attempt wasn't scientific but trial and error. The H9800 CAD files are here at the forum. Scale and modifiy it to fit the Everest dimensions and you are done. I can't proof but I'm pretty sure it's close enough to the original horn. It even measured identical to Widgets curve with the original EV2 crossover circuit in place. Greg would be able to tell us but I doubt he will ;) Jan's version was very nice too but not so easy to EQ with the crossover. So I decided to finally go with the H9800'ish horn. Adapter and lips are different than the first attempt. from some early Jan's posts: http://www.audioheritage.org/vbulletin/showthread.php?15805-Project-Everest-DD66000&p=180832&viewfull=1#post180832 is seems to me that some dimensions can be seen, and from Guido's photos http://www.audioheritage.org/vbulletin/showthread.php?32446-DIY-Everest-DD66000-finally&p=327827&viewfull=1#post327827 I have tried to get initial starting point about the dimensions of the H66000 throat (in the mean time, while Guido would give exact) as on the attached figure. BUT I HAVE ONE PROBLEM MORE, 476 driver is 1.5"-mouth driver, and I have 2"-mouth driver, so the problem for coupling such driver would need more elaboration.

[pos]

this is a 1.5" throat, not 2"

don't know if it is exactly 38mm or 39mm, but certainly not 50mm

[Guido]

Don't know what exactly is going on here? Do you want to design a 3rd version of the horn?

There are already 2 versions:

1) There is Jan's version and if you ask you might get the files from him (I think so)

2) There is my version which is a scaled 9800H. My exact files doesn't make sense for you as you then need my cabinets also. Horn and cabinet belong together with the EV2 design.

[ivica]

Don't know what exactly is going on here? Do you want to design a 3rd version of the horn?

There are already 2 versions:

1) There is Jan's version and if you ask you might get the files from him (I think so)

2) There is my version which is a scaled 9800H. My exact files doesn't make sense for you as you then need my cabinets also. Horn and cabinet belong together with the EV2 design.

Sorry Guido, I have made a mistake, I have totally forget that 476 driver is 1.5"-mouth driver, and I want to connect 2"-mouth driver to the horn look-like H66000, so first I have to think how to do that.
Initially something like JBL has done with 2328 adapter, and try to calculate how the interconnection can be made.
Regards
Ivica

[pos]

The 2" drivers include a 1.5"/2" adapter in their throat, with a slow flare, so you have to take it into account when designing your horn (and it will not be "rapid-flare")

http://www.jblpro.com/catalog/support/getfile.aspx?docid=298&doctype=3

[ivica]

The 2" drivers include a 1.5"/2" adapter in their throat, with a slow flare, so you have to take it into account when designing your horn (and it will not be "rapid-flare")

http://www.jblpro.com/catalog/support/getfile.aspx?docid=298&doctype=3

Yes, some kind of adapter like 2328 adapter has to be incorporated into the horn throat. Some idea is done by Mr.Widget:

http://www.audioheritage.org/vbulletin/showthread.php?5114-2328-2397-transition&p=48092&viewfull=1#post48092

but some other solutions are possible. My first idea is to think about "quadratic throat WG =Q_WG" (or Edgard "Oblate spheroidal WG =OS_WG") which are
relatively "rapid flare". As can be seen from attached figures, the transition from the throat in horizontal plane for 120 deg horn (60 deg half coverage)
can be reach in the first 21.8mm (about 0.86" if Q_WG is applied, or even faster if OS_WG), but the problem is to calculate the shape of the "bubble" in the vertical plane. My 'first initial ques' would be that if Q_WG would be applied that almost no "bubble" would be needed, but almost horizontal plane till full flare reached in horizontal plane, and after that next , about 1" "slant" part in order to reduce the distance between upper an lower plane of the horn to the desired value about 1.375" to 1.5", after that with very 'slow flare' in vertical plane, before reaching the hon lips.

[spkrman57]

I would love to follow the project.

Ron



Guido...

Ivica didn't have Project May access... I just gave him the added permissions.


Widget

[Mr. Widget]

I would love to follow the project.

RonFollow?

That train left the station early in the millennium and hasn't been heard from since. :banghead:


Widget

[Hoerninger]

but some other solutions are possible.

There is no acoustical theorie for the transition from round to square. At some place there will in most cases be a restriction in one plane (often vertical) which results in some cancellation of higher frequencies. It is wise to make the transition "smooth".

Public material, which I have studied in depth, will not show any usable details of the transition in the Everest horn. (I have followed The discussions about the Everest II right from the beginning.)

Measurements are the the basis of network modifications.

:thmbsup: Guidos work is outstanding in any aspect. :thmbsup:

____________
Peter

[ivica]

There is no acoustical theorie for the transition from round to square. At some place there will in most cases be a restriction in one plane (often vertical) which results in some cancellation of higher frequencies. It is wise to make the transition "smooth".

Public material, which I have studied in depth, will not show any usable details of the transition in the Everest horn. (I have followed The discussions about the Everest II right from the beginning.)

Measurements are the the basis of network modifications.

:thmbsup: Guidos work is outstanding in any aspect. :thmbsup:

____________
Peter

I am absolutely amazed with the Guido's gigantic astonishing masterpiece, which is approved by precises measurements,
so there is no doubt about that. My congratulations again.

My idea is first to try to understand the 'secretes' which are incorporated into the H66000 horn design, and may be to
get something useful design with "affordable drivers".
So I will try to put here some of my "speculations" just in order to 'inspire" some of other members of LH forum,
who have much more knowledge and experience in "horns construction domain" so, if any of us want to make "JBL-look" design can better understand what has to be done.
I am absolutely sure that we will not get "Noble's Prize" for our work, but may be our knowledge would be a bit "higher" .

reagrds
Ivica

[4313B]

My idea is first to try to understand the 'secretes' which are incorporated into the H66000 horn design, and may be toget something useful design with "affordable drivers".Ask Guido or Mr. Widget if they will model their H4338 horns (if they aren't already in use) and post the resulting file. The H66000 horn throats are next to impossible to get.

[richluvsound]

Ask Guido or Mr. Widget if they will model their H4338 horns (if they aren't already in use) and post the resulting file. The H66000 horn throats are next to impossible to get.


I think Mr Widget is your best bet from recent conversations . I pretty sure Guido has his H4338 installed and in use :)

Rich

[cooky1257]

The only thing I would suggest is you start another thread, this one being Guido's masterpiece:)

Frank


I am absolutely amazed with the Guido's gigantic astonishing masterpiece, which is approved by precises measurements,
so there is no doubt about that. My congratulations again.

My idea is first to try to understand the 'secretes' which are incorporated into the H66000 horn design, and may be to
get something useful design with "affordable drivers".
So I will try to put here some of my "speculations" just in order to 'inspire" some of other members of LH forum,
who have much more knowledge and experience in "horns construction domain" so, if any of us want to make "JBL-look" design can better understand what has to be done.
I am absolutely sure that we will not get "Noble's Prize" for our work, but may be our knowledge would be a bit "higher" .

reagrds
Ivica

[richluvsound]

:applaud:
The only thing I would suggest is you start another thread, this one being Guido's masterpiece:)

Frank

[4313B]

The only thing I would suggest is you start another thread, this one being Guido's masterpiece:)

FrankYep, it would have been nice if it had stayed on topic.

[Guido]

I will continue with this thread anyway.

I'll publish crossover schematics and VD graps as well as grill details (when it's done) as time permits and interest is there.

I will also try to describe the sound compared to other speakers I have WHEN the cc crossovers are ready and in place

All this will take some time.

[timc]

Did you ever consider going fully active with this project? Going from normal active, with passive compensation, to fully active made for a big improvement for me.

[Guido]

Did you ever consider going fully active with this project?

NO

As I can't afford a Pass XVR1 + two (or four) more Passlabs XA or XA.5 Amps and are too busy to build them I don't think about going active.

My experience with going active is that (affordable) active crossovers destroy the wonderful smoothness of my OPAmp free Passlabs chain. This is -as everything Hifi- my personal and maybe worthless opinion.

[felixx]

Guido...what amps did you use?

[Guido]

Guido...what amps did you use?

I use Passlabs or DIY Passlabs gear only since 5 years.

[felixx]

Of course but what model?

[richluvsound]

Of course but what model?



BLS Reference on Passlabs XA 30.5 + Everest DD66000 clone :cool: on Pass F5X 160

[richluvsound]

Just spent the weekend with Guido and these. I will post some impressions in my humble none tech way ... I just got off the plane, so not to tonite ... Just want to thank Mr and Mrs Guido for making me feel so much at home in the finest tradition of the forum.


Rich

[richluvsound]

K .... the sound . The quality of the components cannot be questioned . The bottom end was like nothing I have heard before.
Tight and deep bass, Mid range wide and dynamic ... the UHF I thought rolled off too quick at 26k ,but hey ... not too bad though.
The networks are still a work in progress ,so more will be revealed I'm sure . Listened to a lot of high res tracks - really hard to go down in bit rate after that . Its the high res that really made them shine .

Its a shame HD is so limited in variety. Classical and Jazz are plentiful ,but I can't listen to that all the time . I did download some tracks when I got home and set the DAC to 192 .. It really is a different experience altogether. The sense of space and clarity is amazing .

Guido was using his F5's and mentioned that he felt his old amps were smoother in the mids ( I didn't say a word as the XAs' now live in England with no plans to cross the channel again ) I was shown some rather interesting schematics for a new amp build though :)

The build quality is German ,thats all I need to say . I got a real insight into the process of tweaking the networks by ear ,but look forward to my next trip to hear the conclusion .

I don't think I have done the project justice , a hard think to do when you don't have a technical background ,but I can say that if money and parts availability were not an issue ,there would be some sawdust flying here in the living room .

Rich

[4313B]

the UHF I though rolled off too quick at 26k ,but hey ... not too bad though.:rotfl: :applaud: Yeah, I hate when that happens.

[felixx]

At Munich 2012 audioshow on MOC (probabily the bigger in Europe) was present the Everest 66000 but without singing........just for look...
Truextend was also there....

[richluvsound]

At Munich 2012 audioshow on MOC (probabily the bigger in Europe) was present the Everest 66000 but without singing........just for look...
Truextend was also there....


If JBL had a room there ,they kept it very well hidden . We didn't see it . We did hear the Genelec and the new TAD Evolution :D
Andrew Jones certainly knows how to build speakers. IMHO , too much bling on most of the gear. A lot of things I'd never heard before ..... even more opinions LOL
These D&M were interesting :

[felixx]

Can't hear anything.....:D5577055771
But was plenty on Cessaro

[richluvsound]

I guess I didn't look hard enough .... I did see the Cessaro .

[Titanium Dome]

What's with the flippin' reptile in front of the Everest and K2? :dont-know:

Maybe Guido needs a special audiophile Croc accessory to "proportion the sound with its multi-faceted, naturally random diffusive properties."

[Guido]

What's with the flipping' reptile in front of the Everest and K2? :dont-know:

Horrible presentation, isn't it?
I'm glad we missed it!

We are offtopic again :)

It's my fault as I don't continue this thread. will do will do will do

[Guido]

Yesterday I finished my Everest 2 clone :bouncy:
It took me almost a day to assemble the missing MF (476Be) crossovers. I had non CC'ed evaluation boards till now as I modified the schematic a bit.
Oh and I left the bipolar elkos out of the midrange crossover.
Caps are "normal" Mundorf PP's and some zinc foil here and there.

You can read it a hundred times at this forum but I'll write it again:

CC your crossovers.

The EV 2 clones really started to sing when I had the crossovers ready. And the boards are still not played in !!

Listening time :)

[4313B]

Yesterday I finished my Everest 2 clone :bouncy: Great news! :)
You can read it a hundred times at this forum but I'll write it again: CC your crossovers.There have been a few people who have expressed their opinion that biasing loudspeaker crossover networks is bogus. But then I found out what those people were using for back ends... :rolleyes:

A line has to be drawn somewhere and this doesn't qualify as a proper back end for evaluating biased versus non-biased filters folks:

[richluvsound]

I guess if one could just plug the networks in to the wall socket for a bias voltage .... one would hear the difference then.
;)

I bet Guido doesn't do a full 8 hour shift today !

[Guido]

..... if one could just plug the networks in to the wall socket for a bias voltage ....

Try it :D


I bet Guido doesn't do a full 8 hour shift today !
9.5 :(
But listening now :)
Claire Martin / Too Much In Love To Care / 24 Bit 192kHz ........... Beryllium Resolution

[MattiasAs]

Wow! mir fehlen die worke, ein echtes Meisterwerk!!!

I am very impressed to see the finished cabinet. It's very awsome!!!! WOW

[canadexco]

Hello to everybody !
I am interested in Everest 66000 but since my business is closed chance to purchase pair of original is close to zero, so only chance left is clone but as can see on photos you posted it is amazingly grate job and I would like to ask if complete drawing is available , if not then is it possible to contact your fantastic carpenter .
Best regards
Bob B.
Toronto
:)

[Challenger604]

Hello to everybody !
I am interested in Everest 66000 but since my business is closed chance to purchase pair of original is close to zero, so only chance left is clone but as can see on photos you posted it is amazingly grate job and I would like to ask if complete drawing is available , if not then is it possible to contact your fantastic carpenter .
Best regards
Bob B.
Toronto
:)

He wont give it to you.
I asked him awhile ago and was very reluctant to give any information. That's why I turned to the 4355...
He may change his mind but I doubt it!

[Lee in Montreal]

He wont give it to you.
I asked him awhile ago and was very reluctant to give any information. That's why I turned to the 4355...
He may change his mind but I doubt it!

Would you blame somebody who worked hard for two years reproducing a cabinet to give away the technical drawings? :D

I am sure the cabinet maker can be traced, then a request for a second set might be possible. Shipping from Germany might be very expensive though. :eek:

Then, it might still be possible to buy the original JBL cabinets in unfinished conditiion as auctionned last year in Denmark (or was it Sweden or Finland?).

[Challenger604]

Would you blame somebody who worked hard for two years reproducing a cabinet to give away the technical drawings? :D

I am sure the cabinet maker can be traced, then a request for a second set might be possible. Shipping from Germany might be very expensive though. :eek:

Then, it might still be possible to buy the original JBL cabinets in unfinished conditiion as auctionned last year in Denmark (or was it Sweden or Finland?).
I don't at all Lee! It's just the way he said it that was not very friendly!

[ivica]

Hello to everybody !
I am interested in Everest 66000 but since my business is closed chance to purchase pair of original is close to zero, so only chance left is clone but as can see on photos you posted it is amazingly grate job and I would like to ask if complete drawing is available , if not then is it possible to contact your fantastic carpenter .
Best regards
Bob B.
Toronto
:)

Hi canadexco,

A lot of info can be find here on the Forum that can help you to make the main box, some of the forum members have offered to make compatible 66k horns, but the greatest problem, from my point of view, would be to get the original drivers, so I would suggest first to get the drivers, then the rest would be much easier.

regards
ivica

[Ruediger]

<snip>
These D&M were interesting :

Thanks in advance.
Ruediger

[macaroonie]

Hello to everybody !
I am interested in Everest 66000 but since my business is closed chance to purchase pair of original is close to zero, so only chance left is clone but as can see on photos you posted it is amazingly grate job and I would like to ask if complete drawing is available , if not then is it possible to contact your fantastic carpenter .
Best regards
Bob B.
Toronto
:)

Any good cabinetmaker will be able to work from these pics. He will probably need to have the mid horn components on hand to confirm the shape of the front flare. A couple of mm out there will stick out like a sore thumb.
If you do a Google image search for ' DD66000 cabinet ' there are dozens of pics of the real thing with cutaway's etc.

66477

66478

[baldrick]

I might end up selling my DD66000 cabinets from Hornslet... with most components needed (Everest woofers, tweeters, x-over + 2451 w/Truextent) but it's costly Things :(

[Tootem]

Hi baldrick, I saw your ad but it dissapeared. Pls info to my direct e-mail address: [email protected]

I just agreed to buy the empty cabinets in rosewood from Svend Michael Hjort Hansen in Denmark but haven't got them yet and ordered the horns from Jan Daugaard but need also the right components inside the cabnets instead of my good old 2234H units.

Best reards

Torbjörn